Dairy Queen Inc., Minneapolis, Minn., is celebrating the unofficial end of summer by giving away one free small Ultimate Oreo Frappé (per customer) at participating Dairy Queen locations from 2 p.m. to 5 p.m. on Tuesday, September 6.

In a nod to baristas and specialty coffee servers, the DQ system will refer to its servers as DQ-ristas, during the Free Frappé Giveaway event.

The Ultimate Oreo Frappé is a combination of coffee, ice and Oreo cookie pieces blended with DQ signature vanilla soft-serve ice cream and finished with whipped topping and Oreo cookie pieces. DQ customers are encouraged to follow the event on their social channels at #DQFreeFrappe.

The Ultimate Oreo Frappé is one of several beverages served during the DQ system’s Hardest Working Happy Hour available weekdays at participating U.S. locations from 2 p.m. to 5 p.m. Customers can choose from a choice of a mocha-, salted caramel- or vanilla-flavored iced coffee; Oreo, caramel chip or Midnight Mocha Ultimate Frappés; and strawberry banana, tripleberry and mango pineapple Orange Julius premium fruit smoothies.

The small flavored iced coffees are $1, and the new DQ Ultimate Frappés and small Orange Julius premium fruit smoothies are just $2 weekdays from 2 p.m. to 5 p.m. at participating locations. While the beverages are available all day, they are value priced only during Happy Hour.